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    SGM3127

    White LED Driver with Low Dropout Current Source
     
    White LED Driver with Low Dropout Current Source
    GENERAL DESCRIPTION

    The SGM3127 low-dropout bias supply for white LEDs is a high-performance alternative to the simple ballast resistors used in conventional white LED designs. It is optimized for low power keypad and portable backlighting applications.

    The SGM3127 uses an internal resistor to set the bias current for four LEDs, which are matched to ±5%. The SGM3127's advantages over ballast resistors include much lower bias variation with supply voltage variation, significantly lower dropout voltage, and in some applications, significantly improved efficiency.

    The SGM3127 requires only a 50mV dropout voltage at a 30mA load on each output to match the LED brightness.

    The SGM3127 is available in a Green SOT-23-6 package. It operates over an ambient temperature range of -40 to +85.

    PIN CONFIGURATIONS

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    FEATURES
    • Support up to 4 LEDs

    • Low 50mV Dropout at 30mA

    • Less than ±5% LED Current Matching

    • Simple LED Brightness Control

    • Low Shutdown Current

    • 2.5V to 5.5V Supply Voltage  Range

    • Thermal Shutdown Protection

    • Operating Temperature Range: -40 to +85

    • Available in a Green SOT-23-6 Package

    APPLICATIONS

    Wireless Handsets
    MP3, MP4, and PMP
    Cellular Phones
    Portable Communication Devices
    Digital Cameras, Camcorders
    PDAs, Palmtops, and Handy Terminals
    LED/Display Back Light Driver
    LEDs for Camera Flash
    Battery-Powered Equipment

    ORDERING INFORMATION
    Part NumberStatusPackagePinsPb-FreeTemp Range
    SGM3127YN6G/TRProductionSOT-23-66Y-40℃ to +85℃






     

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